I got a Custom FirmWare (3.80 M33-5). But later, I tried putting my Battery into a Pandora with a program, on a magic memory stick. It turned into a Pandora but it won't let me put it back to normal!!! I select the Back To Normal option, it says success but it didn't change! Now to play PSP, it has to be plugged with the Charger. Anyone can help me?